Ellison Onizuka Kona International at Keahole in June 2026

89.2%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In June 2026, reporting carriers scheduled 1,370 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 89.2% left less than 15 minutes late and 88.6% reached their destination on time; 0.5% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so KOA departures were 17.0 points above the national departure figure.

A year earlier, in June 2025, the airport had 1,330 departures with 85.5% leaving on time: a change of +3.7 points, with flights up 3%.

Flights arriving at KOA that month were on time 86.2% of the time (1,370 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 47%, late-arriving aircraft 41% and national aviation system 12%.

On time 88.6%
Arrived 15+ minutes late 10.9%
Cancelled 0.5%
Diverted 0.0%

Every scheduled departure from KOA in June 2026, judged by arrival at the destination.

June 2026 against a year earlier, the airport's year and the nation

Measure	Jun 2026	Jun 2025	KOA, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	89.2%	85.5%	85.7%	72.2%
Arrived on time	88.6%	86.2%	84.7%	72.8%
Cancelled	0.5%	0.5%	1.1%	1.6%
Average departure delay (late minutes only)	7.0 min	13.3 min	8.7 min	20.6 min
Scheduled departures a day	46	44	44	20,253
Scheduled departures	1,370	1,330	16,052	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	795	58%	84.5%	3.8 min	0.9%
WN Southwest Airlines	244	18%	97.1%	-9.6 min	0.0%
UA United Airlines	211	15%	91.5%	-5.6 min	0.0%
AA American Airlines	60	4%	91.7%	8.2 min	0.0%
DL Delta Air Lines	60	4%	95.0%	-11.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	586	85.5%	2.6 min	0.9%
KOA–LAX	Kona to Los Angeles	159	93.1%	-8.6 min	0.0%
KOA–SFO	Kona to San Francisco	146	85.6%	1.4 min	0.0%
KOA–OGG	Kona to Kahului	120	90.0%	1.6 min	0.8%
KOA–SEA	Kona to Seattle	120	90.8%	-6.1 min	0.8%
KOA–SMF	Kona to Sacramento	43	95.3%	-5.0 min	0.0%
KOA–DEN	Kona to Denver	30	90.0%	-3.0 min	0.0%
KOA–LAS	Kona to Las Vegas	30	96.7%	-18.2 min	0.0%
KOA–LIH	Kona to Lihue	30	96.7%	-2.6 min	0.0%
KOA–PDX	Kona to Portland	30	90.0%	-10.7 min	0.0%
KOA–PHX	Kona to Phoenix	30	96.7%	24.7 min	0.0%
KOA–SAN	Kona to San Diego	30	96.7%	-9.7 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), June 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2026	Minutes
Air carrier	47.0%	30.8%	3,744
Late-arriving aircraft	41.2%	42.1%	3,282
National Aviation System	11.5%	20.3%	914
Extreme weather	0.0%	6.7%	0
Security	0.3%	0.1%	22

7,962 delay minutes on 149 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left KOA on time in June 2026?

89.2% of 1,370 scheduled domestic departures left less than 15 minutes late, and 88.6% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 85.5% of 1,330 departures left on time and 0.5% were cancelled, against 89.2% and 0.5% in June 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for KOA · methodology · corrections.